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lavf/concat: implement FFSEEK_SIZE.

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This commit is contained in:
Nicolas George 2019-07-19 14:22:15 +02:00
parent 6e1a2dc112
commit 3add65e052
1 changed files with 6 additions and 1 deletions
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7
libavformat/concat.c
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@ -38,6 +38,7 @@ struct concat_data {
struct concat_nodes *nodes; ///< list of nodes to concat
size_t length; ///< number of cat'ed nodes
size_t current; ///< index of currently read node
uint64_t total_size;
};
static av_cold int concat_close(URLContext *h)
@ -59,7 +60,7 @@ static av_cold int concat_open(URLContext *h, const char *uri, int flags)
{
char *node_uri = NULL;
int err = 0;
int64_t size;
int64_t size, total_size = 0;
size_t len, i;
URLContext *uc;
struct concat_data *data = h->priv_data;
@ -112,6 +113,7 @@ static av_cold int concat_open(URLContext *h, const char *uri, int flags)
/* assembling */
nodes[i].uc = uc;
nodes[i].size = size;
total_size += size;
}
av_free(node_uri);
data->length = i;
@ -123,6 +125,7 @@ static av_cold int concat_open(URLContext *h, const char *uri, int flags)
err = AVERROR(ENOMEM);
} else
data->nodes = nodes;
data->total_size = total_size;
return err;
}
@ -158,6 +161,8 @@ static int64_t concat_seek(URLContext *h, int64_t pos, int whence)
struct concat_nodes *nodes = data->nodes;
size_t i;
if ((whence & AVSEEK_SIZE))
return data->total_size;
switch (whence) {
case SEEK_END:
for (i = data->length - 1; i && pos < -nodes[i].size; i--)